Leo Zhang
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Broadcast Control Platform

Chunxiao Technology · 2020

Role: Project Manager, System Designer & Android Developer

Cover

Cover

Large-scale digital signage platform with management console and Android screen clients. MQTT broadcast for campaign task distribution, device grouping, scheduled playback, and remote publishing for elevator, in-store, and public displays.

Unified ad delivery for heterogeneous public screens, efficient remote campaign management

Problem

Multiple public screen types (elevator, in-store, outdoor) need centralized ad campaign management and remote content delivery.

Solution

Multi-terminal platform: management console for campaign scheduling, MQTT broadcast for mass task distribution, Android screen clients for playback, device heartbeat monitoring, and operation audit trails.

Key Highlights

  • Led overall system design and project management for multi-terminal platform
  • Implemented MQTT broadcast for large-scale campaign task distribution
  • Built device grouping and campaign policy control for targeted delivery
  • Supported remote publishing without on-site operation

Tech Stack

JavaKotlinAndroid SDKMQTTHTTP/RESTWebSocket

What I Learned

MQTT broadcast mechanism is efficient for one-to-many device management; audit trails are essential for ad publishing compliance; remote management reduces operational costs significantly.